Frogspawn

Euphyllia divisa, commonly known as frogspawn and sometimes errantly called euphyllia divisia, is a large-polyped stony coral native to the Indo-Pacific islands, that is moderately popular in saltwater aquaria, for reef tanks. It is an aggressive coral that prefers reasonably stable water conditions and uneven flow. It does not require direct feeding, and is very difficult to propagate. The related coral Euphyllia paradivisa is sometimes sold as frogspawn, as well, leading to some confusion.